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<td nowrap="true" class="pageTitle">工具向导：使用 Rational XDE Developer 管理数据库</td><td width="100%">
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<td valign="top">此工具向导指导您使用 Rational XDE Developer 软件工具的比较功能以及将数据模型与数据库或 DDL 同步的功能。</td>
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<td>工具：<a href="./../../../core.base_rup/tools/rup_xde_D81FFA70.html" guid="{303A82D2-E3AB-4501-8563-0D4D43782AF9}">Rational XDE Developer</a></td>
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<div class="sectionHeading">关系</div>
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<th scope="row" class="sectionTableHeading">相关元素</th><td class="sectionTableCell">
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<a href="./../../../core.base_rup/tasks/database_design_8552DD3.html" guid="{2E74A414-49F5-4F27-BFCB-AA2DAC675F58}">数据库设计</a>
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<div class="sectionHeading">主要描述</div>
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<td class="sectionTableSingleCell"><a id="Top" name="Top"></a><a id="XE_XDE_Developer-Java_Platform__Managing_Databases" name="XE_XDE_Developer-Java_Platform__Managing_Databases" class="index" key="XDE Developer-Java Platform" text="管理数据库"></a>

<h3>
    概述
</h3>
<p>
    在此工具向导中可执行以下步骤：
</p>
<ul>
    <li>
        <a href="#StepNumber1">比较与同步</a>
    </li>
</ul>
<h3>
    <a id="StepNumber1" name="StepNumber1">比较与同步</a>
</h3>
<p>
    Rational XDE 比较数据模型与现有的 DDL 脚本文件或数据库模式。（请参阅 <img alt="帮助手册图标" src="./../../../core.base_rup/resources/helpbook.gif" /><i>Data Model
    Comparison</i> <!--  Temporarily removed Javascript - ReferenceHelpTopic(topicTitle,"dm","dm_c_dm_cmp"); -->。）然后，可以在模型与
    DDL 或数据库之间同步这些差异。（请参阅 <img alt="帮助手册图标" src="./../../../core.base_rup/resources/helpbook.gif" /><i>Data Model Synchronization</i> 
    <!--  Temporarily removed Javascript - ReferenceHelpTopic(topicTitle,"dm","dm_c_dm_sync"); -->。）您可以使用<b>数据模型到数据库同步向导</b>启动该比较与同步过程。（请参阅
    <img alt="帮助手册图标" src="./../../../core.base_rup/resources/helpbook.gif" /><i>Comparing and Synchronizing the Data Model</i> 
    <!--  Temporarily removed Javascript - ReferenceHelpTopic(topicTitle,"dm","dm_t_cmpsync_dm"); -->。）
</p>
<p>
    Rational XDE 要求您从数据库级别比较与同步数据模型。您正在比较的 DDL 或数据库模式必须与您的数据模型数据库同名。您还必须比较与该数据模型数据库使用相同数据库管理系统（DBMS）的 DDL 或数据库。
</p>
<p>
    请参考 Rational XDE 联机帮助主题 <img alt="帮助手册图标" src="./../../../core.base_rup/resources/helpbook.gif" /><i>Data Model Compare and
    Synchronization</i> 
    <!--  Temporarily removed Javascript - ReferenceHelpTopic(topicTitle,"dm","dm_c_dm_cmpsync_overview"); -->。
</p>
<p>
    比较和同步过程需要连接到数据库。以下 Rational XDE 联机帮助主题提供了有关建立特定 DBMS 的数据库连接的信息：
</p>
<ul>
    <li>
        <img alt="帮助手册图标" src="./../../../core.base_rup/resources/helpbook.gif" /> <i>Oracle Database Connections</i> 
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        <img alt="帮助手册图标" src="./../../../core.base_rup/resources/helpbook.gif" /> <i>SQL Server Database Connections</i> 
        <!--  Temporarily removed Javascript - ReferenceHelpTopic(topicTitle,"dm","dm_c_sqlsrv_db_connect"); -->
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        <img alt="帮助手册图标" src="./../../../core.base_rup/resources/helpbook.gif" /> <i>Sybase Database Connections</i> 
        <!--  Temporarily removed Javascript - ReferenceHelpTopic(topicTitle,"dm","dm_c_sybase_db_connect"); -->
    </li>
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        <img alt="帮助手册图标" src="./../../../core.base_rup/resources/helpbook.gif" /> <i>DB2 Database Connections</i> 
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